| A | B |
|---|
| abiotic factor | nonliving part of an ecosystem |
| biome | geographic area that contains ecosystem with similar biotic and abiotic features |
| biotic factor | living or once-living thing in an ecosystem |
| community | all the populations living in an ecosystem at the same time |
| ecosystem | all the living and nonliving things in one place |
| population | all the members of one species living in an area |
| succession | gradual change from one community to another community in an area |
| biotic potential | growth of a population, in perfect conditions with no limiting factors |
| carrying capacity | largest number of individuals of one species that an ecosystem can support over time |
| habitat | physical place where a population or organism lives |
| limiting factor | limits the growth of a population |
| niche | ways that an organism survives, obtains food and shelter, and avoids danger |
| symbiotic relationship | two different species live together in a close relation |
| consumer | cannot make their own food and get energy by eating other organisms |
| energy pyramid | model showing the amount of energy available at each step of a food chain |
| food chain | model showing how food energy flows in an ecosystem through feeding relationships |
| food web | model showing several connected food chains |
| producer | changes the energy available in its environment into food energy |
